KR101670787B1 - Cooling tower with a plurality of fan - Google Patents

Cooling tower with a plurality of fan Download PDF

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Publication number
KR101670787B1
KR101670787B1 KR1020160009137A KR20160009137A KR101670787B1 KR 101670787 B1 KR101670787 B1 KR 101670787B1 KR 1020160009137 A KR1020160009137 A KR 1020160009137A KR 20160009137 A KR20160009137 A KR 20160009137A KR 101670787 B1 KR101670787 B1 KR 101670787B1
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KR
South Korea
Prior art keywords
fan
unit
heat exchange
disposed
fans
Prior art date
Application number
KR1020160009137A
Other languages
Korean (ko)
Inventor
김성현
송덕용
Original Assignee
주식회사 성지테크
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Publication date
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Priority to KR1020160009137A priority Critical patent/KR101670787B1/en
Application granted granted Critical
Publication of KR101670787B1 publication Critical patent/KR101670787B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention provides a cooling tower with multiple fans, including: a case having an intake and a vent through which external air flows in and out and an internal space for heat exchange; a heat-exchanging unit coming into contact with cooling water and heat-exchanged by the external air passing through one side; a nozzle unit arranged in an upper part of the heat-exchanging unit and injecting the cooling water; and a multi-fan unit arranged in either a front side or a rear side of the heat-exchanging unit. The number of the operated fans of the multi-fan unit is independently controlled depending on a temperature of the injected cooling water. The multi-fan unit includes a damper unit switching a direction of the external air flowing through the multi-fan unit or opening and closing an opening. The purpose of the present invention is to provide a cooling tower capable of individually controlling the operation of the fans depending on a cooling load.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling tower having a plurality of fans,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling tower having a plurality of fans. More particularly, the present invention relates to a cooling tower for cooling cooling water that has absorbed heat in a freezer by exchanging heat using outside air.

The cooling tower is a kind of heat exchanger for cooling and re-condensing the refrigerant in the condenser of the refrigerator during the refrigeration system, and reusing the cooled water having higher temperature. At this time, the cooling water is cooled by the latent heat of evaporation of the cooling water which is evaporated while being in direct or indirect contact with the atmospheric air (ambient air) having a lower temperature.

In the cooling tower, cooling water is dropped from the top of the tower in the form of droplets of water to pass through a heat exchanger (filler), and air is forcibly blown by a blowing fan installed inside the tower during dropping. That is, the cooling tower is manufactured with the purpose of reusing the cooled cooling water by using it in a place where the water to be used for cooling can not be sufficiently obtained.

However, the blowing fan used in the conventional cooling tower is composed of a single fan and a single motor, and the rotational speed of the motor is generally controlled by an inverter that varies the frequency and operates the motor at a desired speed.

However, when the inverter is installed to adjust the rotation speed of the single fan, the electrical equipment becomes complicated and the cooling tower can not be operated during the maintenance and replacement of the blowing fan. Also, since the single fan has a relatively large size, the noise is large during operation, and the pressure distribution of the air passing through the fan is sloped from both ends of the blade toward the center thereof, resulting in a problem of uniform distribution.

Korean Registered Utility Model No. 20-0436863

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a cooling tower having a plurality of fans, which can individually control the operation of each fan according to a cooling load.

In addition, a plurality of small-sized fans are provided to uniform the pressure distribution of the outside air passing through each fan. Further, even if a failure occurs in some of the fans, the cooling tower can be operated through the remaining fans.

Another object of the present invention is to improve the cooling efficiency by switching the direction of the outside air passing through the fan so as to allow the outside air to flow in a specific direction or by blocking the reverse flow through the housing of another adjacent fan. It is also an object of the present invention to reduce power energy by disposing a plurality of small-sized fans and to reduce noise caused by driving the fans.

In order to solve the above-described problems, an embodiment of the present invention provides a vacuum cleaner comprising: a casing having a suction / exhaust port arranged therein to allow outside air to enter and exit, A heat exchange unit in which the cooling water contacts the surface and is heat-exchanged by the outside air passing in one direction; A nozzle unit disposed above the heat exchange unit and sprinkling cooling water; And a multi-fan unit disposed in either the front or the rear of the heat exchange unit, wherein the number of the fans driven according to the temperature of the cooling water to be sprayed is independently controlled, And a damper part for opening / closing an opening through which the outside air passes.

The heat exchange unit is composed of a crossflow type heat exchange unit in which outside air flows in a horizontal direction and cooling water flows in a downward direction and a counterflow type heat exchange unit in which the outside air flows vertically upward and the cooling water flows vertically downward .

The multi-fan unit includes a plurality of independent housings that are adjacently coupled and arranged in a lattice pattern, and the independent housing can communicate between the suction port and the discharge port.

Wherein the multi-fan unit comprises: a motor unit disposed in each of the interior of the independent housing; A fan coupled to the drive shaft of the motor unit; And a controller for controlling whether the fan is driven or not.

The damper unit may be disposed in at least one of the suction port and the discharge port.

The damper portion includes a frame; A pivot shaft installed in the frame; And a blade coupled to the rotary shaft and rotated to adjust an opening / closing angle, wherein the blade is disposed so that the ambient air passing through the damper unit flows toward a central portion of the heat exchange unit.

It is preferable that the damper portion disposed in the same independent housing as the fan driven in conjunction with the driving of the fan is opened and the remaining damper portion is closed.

The pivot axis is preferably perpendicular to an imaginary straight line drawn from a central point of the independent housing disposed in the center of the multi-fan unit.

As described above, according to the present invention, various effects including the following can be expected. However, the present invention does not necessarily achieve the following effects.

The cooling tower according to the present invention has a plurality of fans, and the operation of each fan can be individually controlled according to the cooling load. Further, it is possible to provide a plurality of fans and to make the pressure distribution of the outside air passing through the fans uniform. In addition, even if some fans fail, the cooling tower can be operated through the remaining fans.

In addition, the direction of the outside air passing through the fan can be changed so as to flow in a specific direction, and the reverse flow through the housing of another adjacent fan can be blocked, thereby improving the cooling efficiency. In addition, it is possible to reduce the power energy required for the cooling tower, and to reduce noise caused by driving the fan.

FIG. 1 is a perspective view of a cooling tower having a plurality of fans according to an embodiment of the present invention.
2 is a front view of the multi-
3 is a cross-sectional view of the multi-
4 is a perspective view of the damper portion.
FIG. 5 is a perspective view of a cooling tower having a plurality of fans according to another embodiment of the present invention.
Fig. 6 is an exploded perspective view seen from the other direction of Fig. 5;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view schematically illustrating a cooling tower having a plurality of fans 45 according to an embodiment of the present invention. 1, a cooling tower having a plurality of fans 45 includes a case 10, a heat exchange unit 20, a nozzle unit 30, and a multi-fan unit 40.

In the case 10, an air inlet (not shown) and an air outlet 14 are disposed on the side surface so that the outside air can communicate with each other. At this time, the outside air may be introduced into the case 10 through at least one inlet port. On the other hand, a space in which the heat exchange unit 20 or the like can be disposed is formed inside the case 10.

The heat exchange unit 20 performs heat exchange with outside air passing through the heat exchange unit 20 when the high temperature cooling water that is sprayed flows downward while being contacted with the surface or temporarily absorbed and stored on the surface, do. The heat exchange unit 20 can be wound around the heat exchange area like a coil so that its contact surface can be increased.

The heat exchange unit 20 is arranged perpendicular to the direction of the outside air passing through the case 10. [ For example, as shown in Fig. 1, the heat exchange unit 20 may be a cross flow type in which the outside air flows horizontally and the cooling water flows vertically downward. Alternatively, the heat exchange unit 20 may be a countercurrent type in which the outside air flows vertically upward and the cooling water flows vertically downward.

Next, the nozzle unit 30 is disposed on the upper side of the heat exchange unit 20 to sprinkle the cooling water. The temperature of the cooling water is increased while the refrigerant circulating in the refrigerator is condensed. Such cooling water is sprayed through the nozzle unit 30. To this end, the nozzle unit 30 is provided with a plurality of spray nozzles. The spouted cooling water flows downward along the heat exchange unit 20 by gravity and is collected. At this time, the cooling water loses heat due to heat exchange, and the temperature thereof is lowered.

2 is a front view of the multi-fan unit 40, and Fig. 3 is a sectional view of the multi-fan unit 40. Fig. Referring to Figs. 2 and 3, the multi-fan unit 40 can be disposed either in front of or behind the heat exchange unit 20. [ In the present invention, the multi-fan unit 40 is disposed in front of the multi-fan unit 40 and serves to blow out the outside air introduced through the air inlet.

Specifically, in the multi-fan unit 40, the number of the fans 45 driven according to the temperature of the cooling water to be sprinkled can be independently controlled. That is, unlike the case of controlling the rotation speed of a single fan through a conventional inverter, an embodiment of the present invention can control the driving of the plurality of fans 45, respectively.

The temperature of the cooling water is proportional to the load applied to the multi-fan unit 40, for example, the load may fluctuate depending on seasonal conditions and the like. To this end, the nozzle unit 30 may further include a temperature sensor capable of measuring the temperature of the introduced cooling water. The degree of the load can be expressed as a specific value according to the measured temperature.

The multi-fan unit 40 includes a plurality of independent housings 41 as opposed to a single fan disposed within a single conventional housing. The independent housings 41 are coupled to each other adjacent to each other, for example, in a lattice shape or the like. At this time, the independent housing 41 has a structure in which the suction port 42 and the discharge port 43 are formed and communicated therebetween.

In addition, the multi-fan unit 40 includes a motor unit 44, a fan 45, and a controller (not shown). The motor part 44 and the fan 45 are respectively disposed in the inner space of the independent housing 41, wherein the motor part 44 can be individually controlled and preferably has a single rotation speed. In addition, the fan 45 is coupled to the drive shaft of the motor unit 44 and integrally rotates to smoothly flow the outside air passing through the inside of the cooling tower.

That is, according to the present invention, the size of the fan 45 is significantly reduced compared to the conventional one, the airflow can be generated evenly, and the pressure formed by the airflow can be uniformly distributed. Further, as the size of the fan 45 is reduced, the noise due to the driving of the fan 45 can be reduced.

In addition, the motor unit 44 coupled thereto can be replaced by a smaller capacity than the conventional motor unit. In addition, the controller can control whether the fan 45 is driven or not. The multi-fan unit 40 according to the embodiment of the present invention can be controlled so that only a part of the motor unit 44 can be driven independently, and as a result, only the fan 45 coupled thereto can operate.

Further, the multi-fan unit 40 can switch the direction of the air flow of the outside air passing through it or open / close the opening through which the outside air passes. For this purpose, the multi-fan unit 40 may include a damper unit 50. [ The damper portion 50 may be disposed in at least one of the suction port 42 and the discharge port 43 of the independent housing 41.

4 is a perspective view of the damper unit 50. Fig. Referring to Fig. 4, specifically, the damper portion 50 includes a frame 52, a pivot shaft 54, and a blade 56. As shown in Fig. At this time, the damper portion 50 may be formed of aluminum, stainless steel or the like for durability and corrosion resistance. In addition, the damper portion 50 may be formed in various shapes such as a circular shape and a square shape depending on the shape of the flow path.

The rotary shaft 54, the blade 56, and the like, which constitute the damper unit 50, may be provided in each damper unit 50 in a single or plural number. However, in the case of a plurality of blades 56, the adjacent blades 56 are preferably rotated in the same direction.

The frame 52 is a member to which the blade 56 and the like are attached and the damper part 50 inserted and fixed to the independent housing 41 can be engaged with the independent housing 41 .

Both ends of the rotary shaft 54 are mounted on the frame 52 and can be rotated. Referring to FIG. 2, the pivot shaft 54 may be provided so as to be perpendicular to a virtual straight line drawn from the center point of the independent housing 41 disposed in the center of the multi-fan unit 40. That is, the respective pivot shafts 54 of the independent housings 41 disposed at the respective corners are installed diagonally so as to face the independent housings 41 arranged in the center in the state where the pivot shafts 54 are installed. Likewise, the installation directions of the pivot shafts 54 other than the respective corners may be specified so as to face the independent housings 41 disposed in the center.

The blade 56 is coupled to the rotary shaft 54 and is rotated to adjust the opening / closing angle. Such blades 56 may be formed, for example, in the shape of an aircraft wing. As a result, the blade 56 can lower the resistance coefficient against the airflow, thereby reducing the noise and reducing the eddy current loss.

The damper unit 50 can be opened and closed in conjunction with the driving of the fan 45. That is, the fan 45 is opened when it is driven and closed when the fan 45 stops. Specifically, the damper portion 50 disposed in the same independent housing 41 as the driven fan 45 is opened, and the remaining damper portion 50 is closed. To this end, the multi-fan unit 40 may further include an actuator (not shown) or the like that can automatically rotate the blades 56 of the damper unit 50.

On the other hand, the outside air passing through the damper portion 50 can be changed in the direction of the airflow in accordance with the opening / closing angle of the blade 56. Specifically, when the blade 56 is opened in the horizontal direction with respect to the direction of the airflow passing through the damper portion 50, the direction of the airflow does not greatly vary. However, when the blade 56 is opened at a certain angle with respect to the direction of the airflow, the airflow discharged is changed to the direction of the blade 56. At this time, the airflow discharged through each independent housing 41 has a pressure distribution in which a low pressure is formed at the center and a high pressure is formed around the low pressure.

In the present invention, the blade 56 may be arranged so that the outside air passing through the independent housing 41 flows toward the central portion of the heat exchange unit 20. [ For this purpose, as shown in FIG. 2, the blade 56 and the rotary shaft 54 may be arranged in different directions depending on the position of the independent housing 41. For example, the blade 56 and the pivot shaft 54 disposed on the side of the corner are disposed diagonally of the independent housing 41.

As described above, in the embodiment of the present invention, when the plurality of independent housings 41 are formed in the single housing and the fans 45 are formed in the respective housings 41, the fans 45 can be operated individually in parallel. At this time, when the fan 45 is driven and the remaining fan 45 is stand-by and stopped, the air flow passing through the fan 45 driven is stopped by the independent housing 45 in which the stopped fan 45 is formed. (41).

If this backflow phenomenon occurs, the outside air can be recycled while having a small menopause path, so that energy loss can be generated and the fan 45 can be rotated upside down. Then, when the fan 45 is stopped again, the drive torque becomes large, so that an electric problem may occur in the drive shaft of the motor unit 44 and the like.

It is preferable to control only the damper part 50 of the independent housing 41 in which the fan 45 to be driven is disposed and the remaining damper part 50 to be closed in order to prevent the backflow phenomenon . This can be realized by a method of rotating the blade 56 of the damper portion 50. [ As a result, even if only some fans 45 of the plurality of fans 45 are driven, the air flow of the outside air passing through the fans 45 can be directed toward the center of the heat exchange unit 20 without flowing back to the periphery thereof.

Meanwhile, the cooling tower according to an embodiment of the present invention may further include a sensor capable of detecting abnormal operation of the fan 45. As a result, it is possible to quickly repair and manage the failure of some of the fans 45 and the like.

FIG. 5 is an exploded perspective view of a cooling tower provided with a plurality of fans 45 according to another embodiment of the present invention, and FIG. 6 is an exploded perspective view of the cooling tower shown in the other direction of FIG. 5 and 6, a cooling tower having a plurality of fans 45 includes a case 10, a heat exchange unit 20, a nozzle unit 30, and a multi-fan unit 40.

In particular, Fig. 5 is characterized in that the multi-fan unit 40 is disposed behind the heat exchange unit 20. Fig. Therefore, the description of each constitution is the same as that described above, and the same reference numerals are given, but the detailed description will be omitted.

However, according to another embodiment, the multi-fan unit 40 is disposed at the position of the exhaust port 14 of the case 10. As a result, the outside air introduced through the inlet port can be discharged to the atmosphere through the discharge port 43 of the multi-fan unit 40 after the heat exchange in the heat exchange unit 20 is performed. The blade 56 is disposed at a position facing the heat exchange unit 20 and smoothes the flow of the airflow while adjusting the opening and closing angles thereof.

Hereinafter, operation of the cooling tower according to an embodiment of the present invention will be briefly described. The high-temperature cooling water flowing into the cooling tower flows through the nozzle unit 30 into the heat exchange unit 20. At this time, after detecting the temperature of the cooling water to determine the degree of load, the fans 45 of some or all of the multi-fan unit 40 are driven.

As a result, the outside air introduced from the intake port of the cooling tower can flow toward the heat exchange unit 20 through the fan 45 partially or wholly being driven. In particular, the damper portion 50 of the independent housing 41 in which the fan 45 is being driven is opened toward the central portion of the heat exchange unit 20 so that the airflow can flow effectively to the heat exchange unit 20, After the exchange is made, it is discharged to the outside of the cooling tower. At this time, the damper part 50 of the independent housing 41 in which the fan 45 is stopped is closed in order to prevent backflow.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10: Case 14: Exhaust port
20: heat exchange unit 30: nozzle unit
40: multi-fan unit 41: independent housing
42: inlet 43: outlet
44: motor section 45: fan
50: damper part 52: frame
54: Pivot shaft 56: Blade

Claims (8)

A case in which a suction and an exhaust port are disposed to allow the outside air to enter and exit, and a space for heat exchange inside is formed;
A heat exchange unit in which the cooling water contacts the surface and is heat-exchanged by the outside air passing in one direction;
A nozzle unit disposed above the heat exchange unit and sprinkling cooling water; And
And a multi-fan unit disposed at either one of a front side and a rear side of the heat exchange unit,
An independent housing having a plurality of the multi-fan units arranged in a lattice shape and having a discharge port corresponding to each of the suction ports;
A motor unit disposed inside the independent housing;
A fan coupled to a drive shaft of the motor unit; And
And a damper portion disposed in the independent housing, the damper portion including a pivot shaft,
The fan detects the temperature of the cooling water and determines whether it is driven according to the degree of the load.
The damper portion disposed in the same independent housing as the fan driven in conjunction with the driving of the fan is opened and the remaining damper portion is closed,
The pivoting shafts are installed so as to be perpendicular to a virtual straight line drawn from a central point of the independent housing disposed in the middle of the multi-fan units
Wherein the rotating shaft is provided with a plurality of fans installed so as to face the independent housings disposed in the center.
The method according to claim 1,
The heat exchange unit is composed of a crossflow type heat exchange unit in which outside air flows in a horizontal direction and cooling water flows in a downward direction and a counterflow type heat exchange unit in which the outside air flows vertically upward and the cooling water flows vertically downward The cooling tower being provided with a plurality of fans.
delete delete The method according to claim 1,
Wherein the damper unit includes a plurality of fans disposed in at least one of the suction port and the discharge port.
The method according to claim 1,
The damper portion
A frame on which the pivot shaft is installed; And
And a blade coupled to the pivot shaft and rotated to adjust an opening / closing angle,
Wherein the blades are provided with a plurality of fans arranged so that the outside air passing through the damper portion flows toward a central portion of the heat exchange unit. delete delete
KR1020160009137A 2016-01-26 2016-01-26 Cooling tower with a plurality of fan KR101670787B1 (en)

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KR1020160009137A KR101670787B1 (en) 2016-01-26 2016-01-26 Cooling tower with a plurality of fan

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114857054A (en) * 2022-05-30 2022-08-05 江西清华泰豪三波电机有限公司 Composite radiator for van-type power station and control method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931272B1 (en) * 2009-03-24 2009-12-11 주식회사 성지공조기술 Module type cooling tower
JP2012255604A (en) * 2011-06-09 2012-12-27 Toshiba Mitsubishi-Electric Industrial System Corp Ventilation fan device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931272B1 (en) * 2009-03-24 2009-12-11 주식회사 성지공조기술 Module type cooling tower
JP2012255604A (en) * 2011-06-09 2012-12-27 Toshiba Mitsubishi-Electric Industrial System Corp Ventilation fan device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114857054A (en) * 2022-05-30 2022-08-05 江西清华泰豪三波电机有限公司 Composite radiator for van-type power station and control method thereof

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